Why doesn't my solution show up in the list, even when I select Mine from the button menu? My solution does show up on my personal page of all the problems I've worked, but not here, is there a reason? I even copied and resubmitted the same solution, but it doesn't show up.

1*1 = 1
2*2 = 4
3*3 = 9
{1, 4, 9} != {1, 2, 18} => False

Testing for [2, 1, 3] and [18, 1, 2]
expected true to equal false

???

Maybe your code is too slow; the C# reference solution takes about 1500 milliseconds at CW (and without a list of prime numbers).

I managed to make it work but tests are too strict on CodeWars side.

It works on server to like n = 3850 and then timeout is shown.

Strangely, on my old laptop for n = 4000 it takes around 4.5 secs.

Great kata, but it's another one on the site where testing won't pass it, despite working ok on my old local notebook.

CODEWARS - maybe it's time to pump up your server? :D